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Allegro MicroSystems, Inc. (ALGM) stock

ALGMNasdaqSemiconductors & Related DevicesFiscal year ends March 31
Financials through Q1 FY2027, quarter ended Jun 26, 2026Last filing: 10-Q on Jul 31, 2026Score 6/30104% above fair value
$30.53−2.50 (-7.57%)

Close on Oct 30, 2026Market cap $5.69BP/E 508.8Yield –

Price history

Allegro MicroSystems share prices for every trading day, newest first. Adjusted for stock splits, not for dividends.

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Close, Oct 30, 2026
$30.53
-7.57% on the day
52-week range
$22.41 – $71.77
-57.5% from the high
Change over 52 weeks
+0.9%
From $30.27 on Oct 30, 2025
Average volume
2.88M
Shares a day, last 90 sessions
DateOpenHighLowCloseChangeVolume
Oct 30, 2026$30.71$31.65$30.01$30.53-7.57%5,001,966
Oct 29, 2026$33.55$34.00$31.03$33.03-6.62%5,976,175
Oct 28, 2026$34.12$35.62$33.46$35.37+4.09%6,237,214
Oct 27, 2026$32.82$34.61$32.60$33.98+5.14%3,486,630
Oct 26, 2026$31.85$32.69$31.04$32.32+2.67%4,027,883
Oct 23, 2026$31.42$31.87$30.63$31.48-0.66%5,710,914
Oct 22, 2026$33.42$33.58$31.24$31.69-8.17%2,458,067
Oct 21, 2026$34.85$35.21$34.08$34.51+1.77%2,539,446
Oct 20, 2026$32.46$34.33$32.12$33.91+2.23%2,427,944
Oct 19, 2026$32.88$33.60$32.06$33.17+4.90%2,783,493
Oct 16, 2026$31.80$32.96$31.43$31.62-2.29%2,595,595
Oct 15, 2026$31.08$32.54$30.51$32.36+0.43%3,191,301
Oct 14, 2026$32.88$33.49$31.72$32.22-4.25%2,410,263
Oct 13, 2026$32.80$33.72$32.41$33.65-0.41%2,985,368
Oct 12, 2026$35.00$35.00$33.70$33.79-5.00%2,723,857
Oct 9, 2026$36.83$36.83$35.07$35.57-1.93%2,551,166
Oct 8, 2026$36.56$37.01$34.95$36.27-2.05%2,574,319
Oct 7, 2026$37.70$37.95$36.79$37.03-4.46%2,410,837
Oct 6, 2026$38.90$39.29$37.98$38.76+0.78%3,286,400
Oct 5, 2026$39.44$39.71$37.85$38.46-2.71%3,483,630
Oct 2, 2026$38.15$40.03$38.15$39.53+8.66%5,907,088
Oct 1, 2026$36.35$36.86$35.68$36.38+0.08%2,794,366
Sep 30, 2026$36.64$37.05$36.15$36.35-0.68%2,098,851
Sep 29, 2026$37.86$38.00$36.21$36.60-0.92%2,414,532
Sep 28, 2026$36.74$37.45$35.74$36.94+0.49%2,748,225
Sep 25, 2026$35.28$36.89$35.13$36.76+4.64%2,555,484
Sep 24, 2026$34.32$35.20$33.95$35.13+0.06%2,463,218
Sep 23, 2026$35.48$35.95$34.85$35.11-1.13%2,521,294
Sep 22, 2026$35.43$36.38$35.13$35.51+0.03%4,595,169
Sep 21, 2026$35.01$35.89$33.85$35.50+4.11%2,565,771

Seasonality

ALGM return in each calendar month over the last 7 years, including dividends. The current month runs to the latest close.

YearJanFebMarAprMayJunJulAugSepOctNovDec
Average7.7%3.6%-1.6%-0.4%9.2%12.5%-5.0%-5.8%-4.4%-3.7%7.6%5.7%
Months up4 of 63 of 62 of 62 of 65 of 64 of 62 of 62 of 62 of 63 of 64 of 64 of 6
202639.9%-1.2%-13.5%53.8%-1.3%45.4%-40.4%-12.7%0.3%-16.0%
202510.2%-7.4%12.7%-24.1%32.9%34.9%-8.1%-1.8%-5.3%2.5%-10.8%-1.2%
2024-14.3%21.4%-14.4%10.1%1.5%-6.3%-14.9%2.0%-5.0%-10.6%4.3%0.6%
202327.1%14.4%9.9%-25.5%10.0%14.8%14.3%-25.9%-16.5%-18.7%4.9%11.2%
2022-21.6%1.0%-0.9%-14.4%5.9%-19.7%20.0%-6.1%-6.3%16.3%22.6%-3.6%
20214.7%-6.4%-3.0%-2.6%6.2%5.7%-1.0%9.6%6.4%4.4%-6.4%15.9%
202030.9%11.3%